An integrated device for turning over soil, sowing and covering soil

Abstract

The utility model relates to an integrated device for turning over soil, sowing and covering soil, which comprises a frame and a traveling mechanism installed on the frame, a lifting turning over mechanism, a reversible covering mechanism and an adjustable speed sowing mechanism, wherein the traveling mechanism comprises a traveling motor arranged in the frame, the lifting turning over mechanism is arranged at the front of the frame and comprises a knife holder assembly and a lifting assembly, the reversible covering mechanism is arranged at the rear of the frame and comprises a covering plate and a reversing motor, and the adjustable speed sowing mechanism is arranged in the middle of the frame and comprises a plurality of sowing bins arranged at intervals from left to right, and a sowing disc is arranged near the bottom outlet of each sowing bin. The advantages are that the walking, turning over soil, sowing and covering functions of the device can be performed independently and in coordination, the sowing density is flexible and adjustable, and the tillage capacity is strong. At the same time, it is a pure electric device, has the advantages of new energy agricultural machinery and equipment, can effectively utilize electric energy and solar energy, has no pollution to the atmosphere and land, and has much higher energy utilization efficiency than traditional agricultural machinery, and has a good market prospect.

Description

Technical Field

[0001] The utility model belongs to the technical field of agricultural machinery, and in particular relates to an integrated device for turning over, sowing and covering soil. Background Art

[0002] A seeder is a planting machine that sows crop seeds. Existing traditional agricultural seeders are usually dragged by a diesel engine on the ground of the field and sow seeds while moving. This type of agricultural seeder includes a diesel engine and a rear sowing assembly, powered by fuel, with low energy efficiency and high pollution. The overall device is relatively complex, heavy, and has a relatively single function.

[0003] The rear sowing assembly of a traditional agricultural seeder generally cannot be driven on ordinary roads with the front of the vehicle. It needs to be disassembled and loaded into a vehicle box for transportation during transportation. The workload of disassembly and transportation is large, and it is usually not possible for a single person to complete the assembly or disassembly with the front of the vehicle in the field. It requires the cooperation of multiple people, with high labor intensity and high labor demand. In addition, it generally only has a single sowing function, and does not have the function of turning over and covering the soil. Before sowing, other agricultural machinery is needed to turn the soil in the field first, and after sowing, other agricultural machinery is needed to cover the soil and suppress it. At the same time, the walking wheel and the seed metering device of this traditional agricultural seeder usually have a direct transmission relationship, and the walking speed is closely related to the sowing and feeding speed, which leads to the sowing spacing being generally fixed and cannot be flexibly adjusted. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an integrated device for tilling, sowing and covering the soil, aiming to overcome the above-mentioned deficiencies existing in the prior art to at least a certain extent.

[0005] The utility model solves the above-mentioned technical problem with the following technical solutions: a soil-turning, sowing and soil-covering integrated device, comprising a frame and a walking mechanism installed on the frame, a liftable soil-turning mechanism, a flippable soil-covering mechanism and an adjustable-speed sowing mechanism, the walking mechanism comprising a walking motor arranged in the frame and two driving wheels and two driven wheels arranged at the bottom of the frame, the walking motor drives the two driving wheels to rotate, the liftable soil-turning mechanism is arranged at the front of the frame and comprises a tool holder assembly and a lifting assembly, the tool holder assembly comprises a rotary tillage blade and a rotary tillage motor driving the rotary tillage blade to rotate, the lifting assembly is used to drive the tool holder assembly to rise and fall and position, the flippable soil-covering mechanism is arranged at the rear of the frame and comprises a soil-covering plate and a flipping motor driving the soil-covering plate to rotate through a connecting rod assembly, the adjustable-speed sowing mechanism is arranged in the middle of the frame and comprises a plurality of sowing bins spaced from left to right, each of the sowing bins is provided with a sowing disc near the bottom outlet, and each of the sowing discs is correspondingly connected to the upper end of the hollow seeding channel of the furrow opener below through a hose from the bottom outlet of the sowing motor.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, the lifting assembly includes vertical screws symmetrically arranged on the left and right sides of the front part of the frame, and the two vertical screws are respectively connected to a slide seat by a spiral transmission. The two vertical screws are driven to rotate synchronously by the lifting motor through a dual-axis output commutator. The tool holder assembly also includes a mudguard with a downward U-shaped opening and a knife shaft rotatably connected to the left and right sides of the mudguard. There are multiple rotary tilling blades and they are fixed on the knife shaft at intervals. The rotary tilling motor is fixed to the outside of the mudguard and the output end drives the knife shaft to rotate through a first gear set. The two slide seats are fixedly connected to the left and right sides of the mudguard.

[0008] Furthermore, the first gear set includes a horizontal bevel gear driven to rotate by the rotary tiller motor and a vertical bevel gear coaxially fixedly connected to one end of the knife shaft, and the horizontal bevel gear is meshed with the vertical bevel gear.

[0009] Furthermore, the dual-axis output commutator is fixed at the middle position of the top front side of the frame, and the left and right output shafts of the dual-axis output commutator are respectively connected to the vertical screw rods on the left and right sides through the second gear set.

[0010] Furthermore, the second gear set includes a bevel gear 1 coaxially fixedly connected to the top end of the vertical screw and a bevel gear 2 coaxially fixedly connected to the output shaft of the dual-axis output commutator, and the bevel gear 1 is meshed with the bevel gear 2.

[0011] Furthermore, the two driving wheels are located in front of the two driven wheels, the two driving wheels are coaxially fixedly connected to the left and right ends of the front axle, a driven gear is coaxially fixed to the middle of the front axle, the travel motor is fixed in the frame and a driving gear is coaxially fixed to the output end, the driving gear is located above the driven gear, and the driving gear and the driven gear are connected through a synchronous belt transmission.

[0012] Furthermore, the connecting rod assembly includes a first rotating shaft and a second rotating shaft, both ends of the first rotating shaft are connected to the frame through bearing members, a plurality of first connecting rods extending rearward and downward are fixedly connected to the first rotating shaft at intervals from left to right, the middle part of each of the first connecting rods is fixed with the first connecting rod, the lower end of each of the first connecting rods is rotatably connected to the second rotating shaft, the left and right ends of the second rotating shaft are respectively fixedly connected with a second connecting rod extending rearward and upward, the two second connecting rods are hinged to the front convex hinge supports on the left and right sides of the covering plate, and the covering plate is rotatably connected to the frame through connecting rods located on the left and right sides of the upper part.

[0013] Furthermore, the first connecting rod can be moved and positioned along the axial direction of the rotating shaft 1 to adjust the spacing between adjacent first connecting rods, and the first connecting rod is locked and positioned with the rotating shaft 1 by a locking bolt.

[0014] Furthermore, the seeding disc is a disc with a hollow cavity, and a seed taking port connected to the hollow cavity is provided on the rim of the disc.

[0015] Furthermore, a solar panel with an adjustable tilt angle is provided on the top and / or left and right sides of the frame, a lithium battery pack is provided on the top or inside of the frame, a charging interface for charging the lithium battery pack through AC power is provided on the surface of the frame, the solar panel is electrically connected to the lithium battery pack through a charging circuit, and the lithium battery pack is electrically connected to the walking motor, rotary tillage motor, flip motor and sowing motor.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The integrated soil-turning, sowing and covering device provided by the utility model integrates a walking mechanism, a liftable soil-turning mechanism, a flippable soil-covering mechanism and an adjustable-speed sowing mechanism which are respectively driven by motors. Walking, soil-turning, sowing and soil-covering can be performed independently or in coordination with each other, and the tillage function can be well realized. In particular, the adjustable-speed sowing mechanism can flexibly control the spacing between plants in a row during sowing by controlling the rotation speed of the sowing motor, and flexibly control the spacing between plants between rows by adjusting the distance between adjacent furrow openers, so the sowing and planting density is highly adjustable. In addition, it is a pure electric device with the advantages of new energy agricultural machinery and equipment, is more environmentally friendly, does not have the problem of fuel pollution, effectively utilizes electric energy and solar energy, does not generate harmful exhaust gas and particulate matter, does not pollute the atmosphere and land, and has much higher energy utilization efficiency than traditional agricultural machinery, and has a good market prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 An axonometric diagram of an integrated device for turning over, sowing and covering soil provided by the utility model;

[0019] Figure 2 for Figure 1 a front view of the device shown;

[0020] Figure 3 for Figure 1 a right side view of the device shown;

[0021] Figure 4 for Figure 1 a top view of the device shown;

[0022] Figure 5 for Figure 1 An axonometric view of the reversible soil covering mechanism and the speed-adjustable sowing mechanism of the device shown (the remaining structures are not shown);

[0023] Figure 6 for Figure 5 a right side view of the structure shown;

[0024] Figure 7 for Figure 1 Axonometric view of the solar panel with adjustable tilt angle in the device shown.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Frame; 2. Driving wheel; 3. Driven wheel; 4. Travel motor; 5. Rotary tillage blade; 6. Rotary tillage motor; 7. Covering plate; 8. Flipping motor; 9. Seeding bin; 10. Seeding motor; 11. Furrow opener; 12. Vertical screw rod; 13. Slide seat; 14. Lifting motor; 15. Dual-axis output commutator; 16. Fender; 17. Knife shaft; 18. Rotating shaft one; 19. Rotating shaft two; 20. First connecting rod; 21. Second connecting rod; 22. Front convex hinge support; 23. Connecting rod; 24. Solar panel; 25. Driving rod; 26. Driving shaft; 27. Driven rod; 28. Strengthening rod; 29. ​​Upper hinge support; 30. Lower hinge support. DETAILED DESCRIPTION

[0027] The principles and features of the present invention are described below in conjunction with the accompanying drawings and specific embodiments. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0028] In the description of the present invention, if terms indicating orientation such as "up", "down", "left", "right", "top", "bottom", "inside" and "outside" are used, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] like Figures 1 to 7As shown, the utility model provides an integrated soil turning, sowing and covering device, which includes a frame 1 and a walking mechanism installed on the frame 1, a liftable soil turning mechanism, a flippable soil covering mechanism and an adjustable speed sowing mechanism, the walking mechanism includes a walking motor 4 arranged in the frame 1 and two driving wheels 2 and two driven wheels 3 arranged at the bottom of the frame 1, the walking motor 4 drives the two driving wheels 2 to rotate, the liftable soil turning mechanism is arranged at the front of the frame 1 and includes a tool holder assembly and a lifting assembly, the tool holder assembly includes a rotary tillage blade 5 and a driving mechanism for driving the rotary tillage blade 5 to rotate The rotary tillage motor 6 is driven by the vehicle frame 1, the lifting assembly is used to drive the tool holder assembly to lift and position, the flip soil covering mechanism is arranged at the rear of the vehicle frame 1 and includes a soil covering plate 7 and a flip motor 8 that drives the soil covering plate 7 to rotate through a connecting rod assembly, the adjustable speed sowing mechanism is arranged in the middle of the vehicle frame 1 and includes a plurality of sowing bins 9 arranged at intervals from left to right, each of the sowing bins 9 is provided with a sowing disc near the bottom outlet, each of the sowing discs is driven to rotate by a sowing motor 10, and the bottom outlet of the sowing bin 9 is correspondingly connected to the upper end of the hollow sowing channel of the furrow opener 11 below through a hose.

[0030] It should be noted that the frame can be welded and assembled with stainless steel rods or aluminum alloy profiles, and the whole is strong and reliable; the liftable soil-turning mechanism, the reversible soil-covering mechanism and the adjustable speed sowing mechanism are arranged on the frame in an interval from front to back, aiming to realize soil-turning, sowing and soil-covering operations at one time when necessary. In addition, when designing the structure of the liftable soil-turning mechanism, the reversible soil-covering mechanism and the adjustable speed sowing mechanism, it is preferred that they can work independently without interfering with each other. Taking the liftable soil-turning mechanism as an example, if the field has been turned over by other agricultural machinery and equipment, the device provided by the utility model can first lift the rotary tillage blade through the liftable soil-turning mechanism after entering the field, and lift it off the ground, and the rotary tillage motor will not be started in the subsequent sowing and soil-covering operations.

[0031] In addition, if Figure 5 and 6 As shown, a funnel-shaped structure can first receive the falling seeds below the bottom outlet of the sowing bin, and then the lower end of the funnel-shaped structure is connected to the upper end of the hose, and the lower end of the hose extends into the upper end of the hollow sowing channel of the furrow opener.

[0032] In one embodiment of the utility model, the lifting assembly includes a vertical screw rod 12 symmetrically arranged on the left and right sides of the front part of the frame 1, and the two vertical screw rods 12 are respectively connected to a slide seat 13 by a spiral transmission. The two vertical screw rods 12 are driven to rotate synchronously by a lifting motor 14 through a dual-axis output commutator 15. The tool holder assembly also includes a mudguard 16 with a downward U-shaped opening and a knife shaft 17 rotatably connected to the left and right sides of the mudguard 16. There are multiple rotary tillage blades 5 and they are fixed on the knife shaft 17 at intervals. The rotary tillage motor 6 is fixed to the outside of the mudguard 16 and the output end drives the knife shaft 17 to rotate through the first gear set. The two slide seats 13 are fixedly connected to the left and right sides of the mudguard 16.

[0033] It should be noted that the vertical screw and the slide adopt a self-locking structure. When the vertical screw is driven to rotate by the lifting motor and the dual-axis output commutator, the slide moves up or down on it. When each lowering motor stops, the vertical screw also stops at the same time and the slide and the vertical screw are self-locking.

[0034] In one embodiment of the utility model, the first gear set includes a horizontal bevel gear driven to rotate by the rotary tiller motor 6 and a vertical bevel gear coaxially fixedly connected to one end of the knife shaft 17, and the horizontal bevel gear is meshed with the vertical bevel gear.

[0035] It is understandable that, in addition to transmission through a gear set, those skilled in the art may also adopt other common transmission connections.

[0036] In one embodiment of the utility model, the dual-axis output commutator 15 is fixed at the middle position of the top front side of the frame 1, and the left and right output shafts of the dual-axis output commutator 15 are respectively connected to the vertical screw rods 12 on the left and right sides through the second gear set.

[0037] It should be noted that the function of the dual-axis output commutator is to convert the single-axis output of the lifting motor into outputs of two axes to the left and right and to ensure strict synchronous rotation during output, so that the left and right vertical screws rotate synchronously to ensure that the tool holder assembly can be lifted up and down smoothly.

[0038] In one embodiment of the present invention, the second gear set includes a bevel gear 1 coaxially fixedly connected to the top of the vertical screw 12 and a bevel gear 2 coaxially fixedly connected to the output shaft of the dual-axis output commutator 15, and the bevel gear 1 and the bevel gear 2 are meshed.

[0039] It is understandable that in addition to using the vertical screw rod and the slide seat to realize the lifting and lowering of the tool holder assembly, it is also possible to consider using vertical racks on the left and right sides, and use gears that cooperate with the vertical racks to drive the tool holder assembly to rise and fall. The specific structure is not repeated here.

[0040] In one embodiment of the utility model, the two driving wheels 2 are located in front of the two driven wheels 3, the two driving wheels 2 are coaxially fixedly connected to the left and right ends of the front axle, a driven gear is coaxially fixed to the middle of the front axle, the travel motor 4 is fixed in the frame 1 and a driving gear is coaxially fixed to the output end, the driving gear is located above the driven gear, and the driving gear and the driven gear are connected by a synchronous belt transmission.

[0041] It should be noted that, in order to facilitate the control of the travel direction, the structure in which the two driving wheels are connected to the front axle and the travel motor drives the driving wheels to rotate can also refer to the specific implementation methods of existing vehicles, and configure differentials and steering gears, etc.

[0042] In one embodiment of the utility model, the connecting rod assembly includes a rotating shaft 18 and a rotating shaft 2 19, and both ends of the rotating shaft 18 are connected to the frame 1 through bearing members. A plurality of first connecting rods 20 extending rearward and downward are fixedly connected to the rotating shaft 18 at intervals from left to right, and the middle part of each first connecting rod 20 is fixed with the furrow opener 11, and the lower end of each first connecting rod 20 is rotatably connected to the rotating shaft 2 19. The left and right ends of the rotating shaft 2 19 are respectively fixedly connected with a second connecting rod 21 extending rearward and upward, and the two second connecting rods 21 are hinged to the front convex hinge supports 22 on the left and right sides of the covering plate 7, and the covering plate 7 is rotatably connected to the frame 1 through connecting rods 23 located on the left and right sides of the upper part.

[0043] It is understandable that when the flip motor rotates, it can drive the first connecting rod to rotate, and the rotation of the first connecting rod will cause the second connecting rod to push or pull the covering plate to rotate around the connecting rod 23.

[0044] In one embodiment of the present invention, the first connecting rod 20 can be moved and positioned along the axial direction of the rotating shaft 18 to adjust the spacing between adjacent first connecting rods 20, and the first connecting rod 20 is locked and positioned with the rotating shaft 18 by a locking bolt.

[0045] It should be noted that the first connecting rod is moved and positioned along the axial direction of the rotating shaft 1, which realizes the adjustment of the spacing between adjacent furrow openers, which is beneficial to adjust the lateral spacing distance of the planting belts or strips.

[0046] In one embodiment of the utility model, the seeding disc is a disc with a hollow cavity, and a seed taking port communicating with the hollow cavity is provided on the rim of the disc.

[0047] In one embodiment of the present invention, the top and / or left and right sides of the frame 1 are further provided with a solar panel 24 with an adjustable tilt angle, such as Figure 7As shown, the upper two sides of the back of the solar panel 24 are connected to the frame through the upper hinge support 29, and the lower two sides are connected to the frame through the connecting rod parts including the driven rod 27, the reinforcing rod 28, the active rod 25 and the active shaft 26 and the lower hinge support 30. The active shaft 26 can be driven to rotate by an angle adjustment motor. When the active shaft rotates, the active rods at both ends are driven to rotate with the active shaft. The two ends of the active rod 25 are respectively hinged to the lower hinge support 30 and the driven rod 27. The rotation of the active rod pulls the driven rod 27 to rotate, thereby realizing the angle adjustment of the solar panel. The solar panel can be rotated and adjusted from a vertical state flush with the left and right sides of the frame to a Figure 7 The tilted state with an angle of about 30 degrees with the horizontal plane is shown in the figure. A lithium battery pack is arranged on the top or inside of the frame 1, and a charging interface for charging the lithium battery pack through the mains is arranged on the surface of the frame 1. The solar panel 24 is electrically connected to the lithium battery pack through a charging circuit, and the lithium battery pack is electrically connected to the walking motor 4, the rotary tillage motor 6, the flip motor 8 and the sowing motor 10.

[0048] It is understandable that solar panels are not only distributed in Figure 1 The forms shown on the left and right sides of the frame can also be arranged on the top of the frame.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A soil turning, sowing and soil covering integrated device, characterized in that: The invention comprises a frame (1) and a walking mechanism, a liftable soil turning mechanism, a flippable soil covering mechanism and an adjustable speed sowing mechanism installed on the frame (1); the walking mechanism comprises a walking motor (4) arranged in the frame (1) and two driving wheels (2) and two driven wheels (3) arranged at the bottom of the frame (1); the walking motor (4) drives the two driving wheels (2) to rotate; the liftable soil turning mechanism is arranged at the front of the frame (1) and comprises a knife frame assembly and a lifting assembly; the knife frame assembly comprises a rotary tillage blade (5) and a rotary tillage motor (6) driving the rotary tillage blade (5) to rotate; The lifting assembly is used to drive the knife holder assembly to lift and position, the flippable soil covering mechanism is arranged at the rear of the frame (1) and comprises a soil covering plate (7) and a flip motor (8) that drives the soil covering plate (7) to rotate through a connecting rod assembly, the adjustable speed sowing mechanism is arranged in the middle of the frame (1) and comprises a plurality of sowing bins (9) arranged at intervals from left to right, each of the sowing bins (9) is provided with a sowing disc near the bottom outlet, each of the sowing discs is driven to rotate by a sowing motor (10), and the bottom outlet of the sowing bin (9) is correspondingly connected to the upper end of the hollow sowing channel of the furrow opener (11) below through a hose.

2. The integrated device for tilling, sowing and covering soil according to claim 1, characterized in that: The lifting assembly comprises vertical screw rods (12) symmetrically arranged on the left and right sides of the front part of the frame (1), and the two vertical screw rods (12) are respectively connected to a slide seat (13) by spiral transmission. The two vertical screw rods (12) are driven to rotate synchronously by a lifting motor (14) through a double-axis output commutator (15). The tool holder assembly also comprises a mud guard (16) with a downward opening in a U shape and a knife shaft (17) rotatably connected to the left and right sides of the mud guard (16). There are multiple rotary tillage blades (5) fixed on the knife shaft (17) at intervals. The rotary tillage motor (6) is fixed to the outer side of the mud guard (16) and the output end drives the knife shaft (17) to rotate through a first gear set. The two slide seats (13) are fixedly connected to the left and right sides of the mud guard (16).

3. The integrated soil turning, sowing and covering device according to claim 2, characterized in that: The first gear set comprises a horizontal bevel gear driven to rotate by the rotary tiller motor (6) and a vertical bevel gear coaxially fixedly connected to one end of the knife shaft (17), and the horizontal bevel gear is meshed with the vertical bevel gear.

4. The integrated soil turning, sowing and covering device according to claim 2, characterized in that: The dual-axis output commutator (15) is fixed at the middle position of the top front side of the frame (1), and the left and right output shafts of the dual-axis output commutator (15) are respectively connected to the vertical screw rods (12) on the left and right sides through the second gear set.

5. The integrated soil turning, sowing and covering device according to claim 4, characterized in that: The second gear set comprises a bevel gear 1 coaxially fixedly connected to the top end of the vertical screw (12) and a bevel gear 2 coaxially fixedly connected to the output shaft of the dual-axis output commutator (15), and the bevel gear 1 and the bevel gear 2 are meshed.

6. The integrated soil turning, sowing and covering device according to claim 1, characterized in that: The two driving wheels (2) are located in front of the two driven wheels (3), the two driving wheels (2) are coaxially fixedly connected to the left and right ends of the front axle, a driven gear is coaxially fixed to the middle of the front axle, the travel motor (4) is fixed in the frame (1) and a driving gear is coaxially fixed to the output end, the driving gear is located above the driven gear, and the driving gear and the driven gear are connected through a synchronous belt transmission.

7. The integrated soil turning, sowing and covering device according to claim 1, characterized in that: The connecting rod assembly comprises a first rotating shaft (18) and a second rotating shaft (19), the two ends of the first rotating shaft (18) being connected to the vehicle frame (1) via bearings, a plurality of first connecting rods (20) extending rearward and downward are fixedly connected to the first rotating shaft (18) at intervals from left to right, the middle of each first connecting rod (20) being fixed with the furrow opener (11), the lower end of each first connecting rod (20) being rotatably connected to the second rotating shaft (19), the left and right ends of the second rotating shaft (19) being respectively fixedly connected with second connecting rods (21) extending rearward and upward, the two second connecting rods (21) being hinged to the front convex hinge supports (22) on the left and right sides of the covering plate (7), and the covering plate (7) being rotatably connected to the vehicle frame (1) via connecting rods (23) located on the left and right sides of the upper part.

8. The integrated soil turning, sowing and covering device according to claim 7, characterized in that: The first connecting rod (20) can be moved and positioned along the axial direction of the rotating shaft (18) to adjust the spacing between adjacent first connecting rods (20), and the first connecting rod (20) is locked and positioned with the rotating shaft (18) by a locking bolt.

9. The integrated soil turning, sowing and covering device according to any one of claims 1 to 8, characterized in that: The seeding disc is a disc with a hollow cavity, and a seed taking port communicating with the hollow cavity is provided on the rim of the disc.

10. The integrated soil turning, sowing and covering device according to any one of claims 1 to 8, characterized in that: The frame (1) is also provided with a solar panel (24) with an adjustable tilt angle on the top and / or on both sides thereof; a lithium battery pack is provided on the top or inside of the frame (1); a charging interface for charging the lithium battery pack via commercial power is provided on the surface of the frame (1); the solar panel (24) is electrically connected to the lithium battery pack via a charging circuit; and the lithium battery pack is electrically connected to the travel motor (4), the rotary tillage motor (6), the flip motor (8) and the sowing motor (10).

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